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* [PATCH v2] MdeModulePkg/DxeCorePerformanceLib: Switch to UnicodeStrnToAsciiStrS
@ 2020-06-22 18:20 Jeff Brasen
  2020-06-24  1:36 ` Dandan Bi
  0 siblings, 1 reply; 4+ messages in thread
From: Jeff Brasen @ 2020-06-22 18:20 UTC (permalink / raw)
  To: devel; +Cc: liming.gao, dandan.bi, Jeff Brasen

UnicodeStrToAsciiStrS requires that the source string is shorter than
the destination buffer and will ASSERT if this is not true. Switch to
UnicodeStrnToAsciiStrS as there are cases where the source string is
longer than the buffer allocated for the device path.

Signed-off-by: Jeff Brasen <jbrasen@nvidia.com>
---
 .../Library/DxeCorePerformanceLib/DxeCorePerformanceLib.c     | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/MdeModulePkg/Library/DxeCorePerformanceLib/DxeCorePerformanceLib.c b/MdeModulePkg/Library/DxeCorePerformanceLib/DxeCorePerformanceLib.c
index f500e20b32..d378c59dd9 100644
--- a/MdeModulePkg/Library/DxeCorePerformanceLib/DxeCorePerformanceLib.c
+++ b/MdeModulePkg/Library/DxeCorePerformanceLib/DxeCorePerformanceLib.c
@@ -837,7 +837,7 @@ GetDeviceInfoFromHandleAndUpdateLength (
       ControllerNameStringSize = FPDT_MAX_PERF_RECORD_SIZE - (*Length) - 1;
     }
 
-    UnicodeStrToAsciiStrS(StringPtr, ComponentNameString, ControllerNameStringSize);
+    UnicodeStrnToAsciiStrS(StringPtr, ControllerNameStringSize - 1, ComponentNameString, ControllerNameStringSize, &ControllerNameStringSize);
 
     //
     // Add a space in the end of the ControllerName
@@ -879,7 +879,7 @@ GetDeviceInfoFromHandleAndUpdateLength (
         AsciiStringPtr = ComponentNameString;
       }
 
-      UnicodeStrToAsciiStrS(StringPtr, AsciiStringPtr, DevicePathStringSize);
+      UnicodeStrnToAsciiStrS(StringPtr, DevicePathStringSize - 1, AsciiStringPtr, DevicePathStringSize, &DevicePathStringSize);
       *Length += (UINT8)DevicePathStringSize;
       return EFI_SUCCESS;
     }
-- 
2.17.1


^ permalink raw reply related	[flat|nested] 4+ messages in thread

end of thread, other threads:[~2020-07-20  1:15 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2020-06-22 18:20 [PATCH v2] MdeModulePkg/DxeCorePerformanceLib: Switch to UnicodeStrnToAsciiStrS Jeff Brasen
2020-06-24  1:36 ` Dandan Bi
2020-07-17 20:46   ` Jeff Brasen
2020-07-20  1:15     ` Dandan Bi

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